None of the leads are American
I immediately thought David sounds British and then I saw that all the leads are either British, Canadian and Australian.
Not that it's important but I just thought it is an unusual fact.
Yeah it is unusual but all their accents were good. I mean they weren't southern at ALL. Not that everyone from the south has a thick accent...but usually if you're going to have a movie take place in Georgia there would at least be some accents, at least from minor characters.